baber/WOPTO huggingface dataset:
Patent CA-2012675-C (CA)
Title: Plastic container for pressurized fluids
Inventor: WALKER LARRY D
IPC: B65D1/02
Filed: 1990-03-21
Granted: 1997-03-04
Abstract: A blow-molded plastic container having a body comprising a neck portion, a generally cylindrical sidewall portion and a bottom structure.  The bottom structure comprises a central portion, a plurality of ribs extending downwardly from the bottle sidewall to the central portion, and a plurality of feet extending below the central portion from the sidewall portion.  The ribs are defined by an upper curvilinear surface and, in cross-section are of an substantially U-shape having a relatively tight radius, the upper rib surfaces lying on a generally hemispherical curvature in the interior of said container.  Each foot is positioned between two ribs and has a pair of rib-defining endwalls connected to and continuous with the ribs on each side of a curvilinear outer wall connected to and continuous with the sidewall portion, a generally horizontal base surface joined to said outer wall, a generally vertical first inner surface forming a lip extending upwardly from the base surface, and a second inner surface extending from the lip to the central portion.
Patent CA-2016092-C (CA)
Title: Process and device for supplying moulds with liquid metal
Inventor: JEAN-PIERRE DENIS
IPC: B22D18/04
Filed: 1990-05-04
Granted: 1999-11-16
Abstract: A mould containing a gasifiable consumable pattern 3, embedded in a binder-free sand, is fed via its base by a pressurised chamber 6 containing liquid cast iron, the pressure in the chamber 6 being regulated as a function of the surface/volume ratio of the consumable pattern 3. 
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Patent CA-2016479-C (CA)
Inventor: KIRIYAMA MITSUO
IPC: H02M7/48
Filed: 1990-05-10
Granted: 1995-08-01
Abstract: A corrective device for an inverter output voltage error according to this invention consists in that a current sensor is connected in series with the output of an inverter, that the polarity of a current detected by the current sensor is discriminated by polarity decision means, while a value corresponding to an input D.C. voltage is found by a D.C. voltage sensor, that a signal with the polarity of the value inverted according to the discriminated result delivered from the polarity decision means is generated by a polarity inverter circuit, and that the signal is applied as a correction signal to the PWM (pulse-width modulation) circuit of the inverter so as to correct the output voltage error.
Patent CA-2032470-C (CA)
Title: Finely powdery magnesium hydroxide and a process for preparing thereof
Inventor: MEIER ANDREAS
IPC: C08K3/22
Filed: 1990-05-02
Granted: 2000-09-05
Abstract: A finely powdery magnesium hydroxide especially suitable as flame-retardant filler for plastic compounds, in which the particles are provided optionally with a thin coating of a surfactant. The grain size of the magnesium hydroxide, measured by laser diffraction, is below 10 µm, the median value of the grain size being greater than 0.8 µm and 3 µm at the utmost. The contents of water-soluble ionic impurities, viz. Ca++, Na+, K+, SO4--, C1-, of the magnesium hydroxide are below the following limits (in parts by weight): Ca++ < 1000 ppm, Na+ < 20 ppm, K+ < 20 ppm, SO4-- < 1500 ppm, Cl- < 1000 ppm, and the contents of Mn, Cu and Ni are below the following limits (in parts by weight): MnO < 100 ppm, NiO < 100 ppm, CuO < 10 ppm.      The process for preparing the magnesium hydroxide starts from a magnesium oxide obtained by spray roasting from a magnesium chloride solution from which previously foreign matter has been removed, to which magnesium oxide water is added for hydration, whereupon the resulting magnesium hydroxide is removed by filtration and the filter cake material is subjected to a post-wash with water.
Patent CA-2032941-C (CA)
Title: Identification mark reading apparatus
Inventor: NISHIDA MASASHI
IPC: G06K7/016
Filed: 1990-12-21
Granted: 1996-01-16
Abstract: The  reading  timing  determination  unit  determines  a timing at which identification marks such as print bar codes should be read.  The reading unit reads identification marks in accordance with the timing to provide identification mark data in a numerical form.  The discrimination unit compares identification   mark   data   with   data   value   of   an identification mark to be primarily printed to judge whether or not the identification mark is correctly printed.   The signal generation unit produces a notifying signal when it is  judged  that  the  identification mark  is  not  correctly printed.   In this way, this apparatus tests whether or not identification marks successively printed on a moving body in the form of sheet by the printing machine are correctly printed.
Patent CA-2033931-C (CA)
Title: Technique for determining signal dispersion characteristics in communications systems
Inventor: WANG JIN-DER
IPC: H04N17/00
Filed: 1991-01-10
Granted: 1995-06-27
Abstract: The present invention covers the notion of determining signal dispersion characteristics, such as amplitude, phase and delay, by transmitting a training sequence. This training sequence includes a plurality of predetermined symbols and has a time duration at least equal to the expected range of the signal dispersion delay characteristic. At a receiver, the received training sequence is processed usingcorrelation and signal replication and the aforesaid signal dispersion characteristics are determined therefrom.
Patent CA-2036518-C (CA)
Title: Full spectrum polarized lighting system
Inventor: KARPEN DANIEL NATHAN
IPC: F21V23/02
Filed: 1991-02-18
Granted: 1997-09-09
Abstract: A full spectrum polarized lighting fixture for general commercial, institutional, and industrial use, and for offices with computer terminals or video display terminals.  The lighting fixture contains an electronic solid state ballast, a polarizing lense, and a full spectrum color corrected lamp. The ballast may be dimmed either manually with a manual dimmer switch, automatically with a photocell against available daylight, or by means of a digital low voltage signat generated by an energy management system.  The lense is a polarized diffuser to provide glare free light With excellent contrast.  The fixture contains a full spectrum color corrected lamp to simulate daylight.  The combination of polarizing lense with the full spectrum lamp provides for full spectrum polarized light.
Patent CA-2042584-C (CA)
Title: .alpha., .beta.-unsaturated nitrile manufacturing apparatus
Inventor: MUROYA HIROAKI
IPC: C07C253/24
Filed: 1990-10-04
Granted: 1993-11-09
Abstract: ABSTRACT           An .alpha.,.beta.-unsaturated nitrile manufacturing apparatus for manufacturing an .alpha.,.beta.-unsaturated nitrile having the same number of carbons as in a starting material which is an olefin or tertiary butyl alcohol by causing propylene, isobutylene or tertiary butyl alcohol, and ammonia and oxygen containing air to be reacted, comprising:           a reactor; a "material gas" feeder horizontally disposed at the lower portion of said reactor and having a plurality of "material gas" blowoff nozzles disposed on the lower surface thereof; and an oxygen containing gas feeder disposed at a lower portion of said "material gas" feeder in parallel therewith, spaced apart therefrom at a predetermined interval and having oxygen containing gas blowoff pipes disposed on the upper surface of said oxygen containing gas feeder in opposing relation with said "material gas" blowoff nozzles, the number of said oxygen containing gas blowoff pipes being the same as that of said "material gas" blowoff nozzles provided on said "material gas" feeder;           wherein said predetermined interval is 25 to 300 mm as measured by the respective intervals between said nozzles and said pipes; and the intervals between said oxygen containing gas blowoff pipes are 90 to 250 mm, and the number of said pipes is 16 to 120 pieces/m2 in the cross sectional area of said reactor.
Patent CA-2044154-C (CA)
Title: Method of assaying d-vanillylmandelic acid, and reagent and kit therefor
Inventor: KURODA MANAMI
IPC: G01N33/574
Filed: 1990-10-18
Granted: 1999-07-13
Abstract: The present invention is concerned with a method of assaying D-vanillylmandelic acid (D-VMA) contained in a specimen of a living organism through the following steps (A) to (D), and a reagent and a kit used for the assay, wherein a racemic mixture of VMA is used as the standard substance for preparing a calibration curve and a labeled anti-D-VMA antibody is used as the labeled anti-VMA antibody to specifically assay only D-VMA in the specimen: (A) the step of conducting a competitive reaction of VMA in the specimen and VMA in solid phase against the labeled anti-VMA antibody; (B) the step of separating the liquid phase from the solid phase; (C) the step of determining the quantity of labeling of the labeled anti-VMA antibody combined with the solid-phase VMA and that of other substances; and (D) the step of preparing a calibration curve or obtaining an equation by using a standard substance of a known concentration, calculating the concentration of VMA corresponding to the quantity of labeling determined in the step (C) by using the calibration curve or equation thus obtained, and defining the concentration thus calculated as the concentration of VMA contained in the specimen.
Patent CA-2046075-C (CA)
Title: Addition polymerization catalyst with oxidative activation
Inventor: LAPOINTE ROBERT E
IPC: C07F7/28
Filed: 1991-07-02
Granted: 2002-06-04
Abstract: Addition polymerization catalysts of the formula L ~ MX+ A- prepared by oxidation of a Group 4 or Lanthanide metal derivative of the formula L~ MX2 with an oxidizing agent of the formula (Ox +a)b(A-)d are free of interfering amine or phosphine byproducts. In these formulae:-L independently each occurrence is a ligand or ligand system, especially a n5-cyclopentadienyl group optionally covalently bonded to M throng a substituent; ~ is an integer, especially 1;      M is a Group 24 or the Lanthanide metal, especially titanium or zirconium;      X is hydride or a hydrocarbyl, silyl or germyl group having up to 20 carbon, silicon or germanium atoms, especially benzyl;      A- is a monovalent, compatible, noncoordinating anion, especially perfluorotetraphenyl borate;    Ox +a is a cationic oxidizer having a charge of (+a), especially Ag+ or ferrocenium; and b and d are integers selected to provide charge balance.
Patent CA-2050242-C (CA)
Title: Logarithmic polar coordinate transforming method, vision recognizing method, and optical information processing apparatus
Inventor: ITOH MASAMI
IPC: G06V10/88
Filed: 1991-08-29
Granted: 1999-04-06
Abstract: A vision recognition method achieves improved accuracy by employing a logarithmic polar coordinate transforming method including the steps of storing information (f) of an input image, generating complex amplitude information (f * A * T) based on the information (f) of the input image, phase information (A), and amplitude information (T), an amplitude of which changes according to the distance between each point composing the amplitude information (T) and the origin of logarithmic polar coordinates, and Fourier-transforming the complex amplitude information (f * A * T).
Patent CA-2053007-C (CA)
Title: Cooling system cleaning solutions containing sorbitol
Inventor: COKER DANIEL E
IPC: C11D7/26
Filed: 1991-10-08
Granted: 1997-12-02
Abstract: Cooling system cleaning solutions containing an EDTA salt, sorbitol, and a soluble nitrate salt are effective in removing scale, corrosion, and solder bloom from cooling systems without blackening aluminum, and can be formulated into concentrates having enhanced storage stability.
Patent CA-2055669-C (CA)
Title: Static electric discharge for dust collector
Inventor: BERFIELD ROBERT C
IPC: A47L9/24
Filed: 1991-11-15
Granted: 2000-04-18
Abstract: An anti-static dust collector includes a tank and an electrically non-conductive flexible hose, both of which are susceptible to the build-up of static electric charge.  To remove such charge from the hose, the hose includes a helical wire which is connected to the grounding terminal of the electrical power plug used to supply electric power to the dust collector. Where the housing of the vacuum cleaner is electrically non-conductive, accumulation of electrostatic charge from the housing is removed by a metallic strap connected to the interior of the housing and also electrically connected to the grounding terminal of the power plug.
Patent CA-2058081-C (CA)
Title: Process for extruding crystalline aluminosilicates
Inventor: MOUREAUX PATRICK
IPC: B01J37/00
Filed: 1991-12-19
Granted: 2002-05-07
Abstract: The present invention relates to a process for preparing a shapable dough which comprises mixing and kneading a silica source, a dealuminated aluminosilicate zeolite source, water and a tri-alkanolamine containing at least two carbon atoms per alkanolamine moiety, to a shapable dough thus obtained, to the preparation of extrudates containing dealuminated aluminosilicate zeolites by extruding a shapable dough comprising a silica source, a dealuminated aluminosilicate zeolite source, water and a tri-alkanolamine and having a total solids content between 25 and 75% by weight and a trialkanolamine content between 0.5 and 40% by weight on the total solid content of the mixture, to extrudates thus obtained, to the preparation of calcined extrudates containing dealuminated aluminosilicate zeolites and to (hydro)conversion processes, in particular hydrogenation processes using such extrudates.
Patent CA-2062849-C (CA)
Title: Transmission system for the synchronous digital hierarchy
Inventor: URBANSKY RALPH
IPC: H04J3/07
Filed: 1992-03-12
Granted: 2001-04-17
Abstract: Transmission system for the synchronous digital hierarchy.       The invention relates to a transmission system for the synchronous digital hierarchy, comprising an adaptation circuit for compensating for phase variations of an STM-N signal. The adaptation circuit (8) comprises a buffer (17, 33), a write address generator (16, 35), a read address generator (18, 44), a justification decision circuit (24, 43) and an output circuit (19, 45), for inserting justification locations for at least one container of the STM-N signal. The buffer is provided for writing and reading the container data. The write address generator is provided for generating write addresses for the data to be written and the read address generator is provided for generating read addresses for the data to be read out. The justification decision circuit is used for forming the mean value of the differences of the addresses of the read and write address generators over a specific period of time and for forming a justification signal as a function of the mean value. The output circuit is provided for generating negative or positive justification locations in the container as a function of the justification signal and for generating an output signal on the basis of the data stored in at least one buffer.
Patent CA-2063224-C (CA)
Title: Low temperature food storage equipment
Inventor: HACHINOHE YUTAKA
IPC: F25D3/02
Filed: 1992-03-17
Granted: 1998-12-01
Abstract: The low temperature food storage equipment of the present invention is provided with an icehouse and a food storeroom each surrounded by a heat insulator.  The icehouse and the storeroom are connected by a detachable heat exchanger disposed therebetween.  In the icehouse there is stored water which is frozen into ice when the outside air grows cold.  In the storeroom there are kept in cold storage a large amount of shippable food, for example, potatoes.  In the case of shipping the food, the heat exchanger is removed and the food is transported on a truck or the like while being kept in cold storage in the storeroom.
Patent CA-2069429-C (CA)
Inventor: SAXENA KRIPA C
IPC: G16H30/20
Filed: 1990-11-20
Granted: 2001-10-02
Abstract: A method and apparatus as described facilitating the investiga-tion of a human breast for a malignancy. The apparatus includes an optical assembly (12) which includes a camera (14) for acquiring infor-mation from a mammogram. This information is fed to a programmed computer (13) which applied preselected criteria to identify suspicious masses and calcifications depicted by the mammogram. It further in-cludes a graphics monitor (22) for, among other things, displaying a reconstruction of the mammogram having the masses and the calcifica-tions highlighted. The optical assembly also includes a zoom lens (18) on the camera enabling one to obtain a magnified view on the monitor via the camera of a particular region it is desired to be investigated in more detail. The method of the invention includes optically analyzing a mammogram to acquire information defining characteristics of the breast desired to be analyzed, applying preselected criteria to such in-formation, and thereafter displaying the results.
Patent CA-2073116-C (CA)
Title: Portable device for straightening out tubes
Inventor: SAURON JEAN
IPC: B21D1/05
Filed: 1992-07-03
Granted: 2002-09-17
Abstract: A portable device for straightening out pipes, consisting of a hollow beam provided at its two ends with first and second movable bearing members, respectively, one of which or first movable bearing member is actuated by a jack housed within the hollow beam whereas a grip for handling the device is transversely and adjustably mounted on the beam between the first and second movable bearing members and carries a third movable bearing member, the device being applicable in particular for straightening out polyethylene tubes to be assembled end to end.
Patent CA-2076298-C (CA)
Title: Hair retaining device
Inventor: VIDETZKY RUSSELL JOEL
IPC: A45D8/02
Filed: 1992-08-19
Granted: 1995-12-12
Abstract: A hair retaining device comprises at least one circular helical coil and a retaining means for co-action with the coil. Pockets are defined between the coil and the retaining means. In use the device is screwed into a user's hair and thehair strands are captively retained in the pockets. The retaining means preferably comprises another virtually identical coil joined to the first coil at one common end. The coils are wound on the same hand and are coaxial with each other to form thepockets therebetween. The other ends of the two coils are free and spaced apart.
Patent CA-2080455-C (CA)
Title: Bladder and method of making the same
Inventor: POTTER DANIEL R
IPC: A43D25/06
Filed: 1992-10-13
Granted: 1999-01-19
Abstract: A bladder usable in the sole of a shoe for supporting the plantar area includes a plurality of chambers designed to provide a resilient resistance force. In the fabrication of the bladder, each of the chambers is formed in fluid communication with each other, and fluid is supplied into the chambers at a selected location. After the chambers have been pressurized to the desired internal pressure, the fluid communication port(s) is sealed. Although certain of the chambers are pressurized to the same internal pressure, different resistance forces are provided by forming the chambers with different volumes.
Patent CA-2081210-C (CA)
Inventor: BOUDREAUX EDWIN JR
IPC: C08F255/00
Filed: 1992-03-19
Granted: 2000-09-19
Abstract: La présente invention concerne des compositions de polymères stéréoréguliers stabilisés d'alpha-oléfines supérieures ramifiées, de composés de greffage, de générateurs de radicaux libres, de résine de verre et époxy et/ou de silanes à fonction-époxy. L'invention concerne également des procédés de production de ces composés et d'articles constitués des dits composés.
Patent CA-2085750-C (CA)
Title: Osteoinductive pharmaceutical formulations
Inventor: GERHART TOBIN N
IPC: A61P43/00
Filed: 1991-06-18
Granted: 2003-02-18
Abstract: Osteoinductive pharmaceutical Formulations comprising antifibrinolytic agents such as epsilon amino acid caproic acid or other lysine analogues or serine protease inhibitors and cartilage and/or bone inductive proteins are disclosed. These formula-tions are useful in the treatment of cartilage and/or bone defects.
Patent CA-2087360-C (CA)
Title: Standardizing and calibrating a spectrometric instrument
Inventor: TRACY DAVID H
IPC: G01J3/02
Filed: 1993-01-15
Granted: 2005-04-12
Abstract: A spectrometric instrument which exhibits an intrinsic profile for a sharp spectral line produces profile data for narrow spectral lines. The spectral lines are effected with a high finesse etalon of gold coated polymer. A transformation filter is computed for transforming the profile data to a gaussian profile. A wavelength calibration is combined with the filter to effect a correction matrix which is applied to sample data to generate calibrated standardized data. Iteratively a correction matrix is applied to calibration data to generate standardized calibration data which is utilized for the wavelength calibration. Calibration is effected with an optical standard, an interference etalon and a fringe formula. Etalon effective thickness is first estimated and then precisely determined so that fringe peaks calibrate wavelength.
Patent CA-2089218-C (CA)
Title: Apparatus and method of image registration
Inventor: HART STEVEN C
IPC: B41J2/385
Filed: 1993-04-07
Granted: 1999-11-16
Abstract: An apparatus and method of positional tracking a moving photoconductive belt and adjusting an imager in an electrophotographic printing machine to correct for alignment errors when forming a composite image. Registration errors are sensed by developing an appropriate set of target marks, detecting the target marks, and controlling the position of the imager.
Patent CA-2092326-C (CA)
Inventor: OXLEY JEFFERY ALLEN
IPC: A22C13/00
Filed: 1993-03-24
Granted: 1996-07-09
Abstract: A shirred fibrous casing article containing about 20% to about 30% moisture by total casing weight and composed of shirred portions spliced together and retained in an overwrap wherein a flag which identifies the splice location between the shirred portions is extended radially through the overwrap.
Patent CA-2092589-C (CA)
Title: Article comprising an optical fiber laser
Inventor: DIGIOVANNI DAVID JOHN
IPC: H01S3/106
Filed: 1993-03-26
Granted: 1998-06-30
Abstract: An article, such as an optical communication system, which includes a laser formed in an optical waveguide or optical fiber having a rare-earth-doped core or core portion. In one embodiment, the optical resonant cavity of the laser is at least partially defined by a distributed Bragg reflector (10, 20) formed in a portion of the core. In contrast to the prior art, the length of the optical resonant cavity is about 5 cm or less.
Patent CA-2094542-C (CA)
Title: Method for treating ammonia and urea condensates
Inventor: CZUPPON THOMAS A
IPC: C01C1/10
Filed: 1993-04-21
Granted: 2003-06-10
Abstract: A method is described which enables ammonia plant process condensate contaminated with ammonia, carbon dioxide and methanol and urea plant condensate contaminated with urea, ammonia, carbon dioxide and other combined forms of ammonia and carbon dioxide to be simultaneously converted, in a single treatment vessel, substantially and continuously to a vaporous stream rich in ammonia, carbon dioxide and methanol and an liquid stream poor in ammonia, carbon dioxide, methanol and urea. The vaporous stream thus produced is recycled and employed as a feedstock in the reforming section in the ammonia plant.
Patent CA-2094874-C (CA)
Title: Non-antibacterial tetracycline compositons possessing antiplaque properties
Inventor: MCNAMARA THOMAS F
IPC: A61K31/65
Filed: 1993-04-26
Granted: 2003-02-11
Abstract: Methods of inhibiting plaque formation and caries on mammalian tooth surfaces are disclosed. The methods include contacting the tooth surfaces with an effective amount of a non-antibacterial tetracycline. In preferred embodiments, the tetracyclines are included in various oral hygiene products such as dentifrices, lozenges, chewing gums and the like to contact the tooth surfaces.